Demountable rim



Patented July 5, 1938 UNITED STATES PATENT OFFICE DEMOUNTABLE RIM Emanuel Ramirez, Miraflores, Peru Application February 16, 1937, Serial No. 125,944 1 Claim. (or. 152-405) This invention relates to demountable rims, and more particularly to a combined wheel and demountable rim section which enables the removal and replacement of a tire in a minimum of time.

The invention embodies many novel features of construction and combinations and arrangements of parts, all of which will be more fully hereinafter described and pointed out in the claim.

In the accompanying drawing- Fig.1 is a view in side elevation of my improved wheel and demountable rim, the outer cap or cover being removed;

l5 Fig. 2 is a view in transverse section on the line 2--2 of Fig. l with the cap or cover in operative position;

Fig. 3 illustrates in section the several parts of my improved wheel and demountable rim; and

Fig. 4 is a fragmentary view in section, the view being taken through the recess portion of the wheel felly which receives the telly of the tire.

My improved wheel includes a felly III, which may be connected by spokes ii with a central hub l2, although, of course, it is to be understood that the invention is not limited to this type of wheel as any form of wheel having spokes or disks of other construction may be employed.

a The felly III is made with an annular groove or recess It so that the felly is of general channel shape in cross section to lighten the weight of the wheel as much as possible.

A fixed rim section I4 is secured to or made integral with the inner portion of the felly, and

- a removable rim section II is located against the outer face of the felly and at its outer portion is of general compound curvature in section conforming in general shape to the shape of the fixed rim section I. With this exception, however, the outer rim section II has its outer edge turned inwardly forming an annular internal bead l6.

l1 represents a ring which is located within the rim section I! and hes flat against the inner portion of saidrim section and conforms in curvature to the outer portion of the rim section so as to lie flush against the rim section throughout. This rim section i5 is formed at its inner edge with an annular inwardly projecting flange ll located within the felly l0 and against the inner face of the fel y.

The felly Ill, the rim section II, and the ring I! are formed with registered openings I8, 20 and 2i respectively receiving bolts 22. These bolts 22 have angular heads 23 at their inner ends I which normally rest in angular recesses 24 in the inner face of the felly It so thatwhen nuts 25 are screwed on to the outer ends of the bolts 22 and against the ring i'l, all the parts will be securely secured together and when these nuts are 5 removed the partsmay be separated to permit the removal and replacement of a tire.

In order to bridge the gap of the recess IS in the felly, I provide an annular ring or hoop 28 which is located within the tire and fits around 10 the outer face of the felly, This hoop 28 is provided with an opening 21 to receive the valve of the tire, and the felly i0 is provided with a recess 28 which also accommodates the valve of the tire and permits the removal of the tire. i5

28 represents a cap or removable cover plate which is preferably of general concavo-convex shape and is provided at its outer edge with an inwardly turned portion constituting a bead l0 which is adapted to spring into the bead It on 20 the rim section I! and be'retained within the rim section but can be easily removed by the insertion of a proper tool through a recess ii in the disk 29.

While I have illustrated and described what I 25 believe to be a preferred embodiment of my invention, it is obvious that various slight changes may be made with regard tothe form and arrangement of parts without departing from my invention, and hence I do not limit myself to the 30 precise details set forth but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the claim; a

I claim: 5

In combination with a wheel, a channel shaped felly constituting an integral part of the wheel,

a rimsectionintegral with the inner flange of the wheel felly, a removable rim section located against the outer face of the wheel felly, a re- 40 movable tire supporting hoop located around the telly between the rim sections, a ring located against the outer face of the removable rim section, an annular flange on the removable rim section located within the'wheel felly, said felly, 5 removable rim section and ring having ,alined openings therein, bolts in said openings, and nuts on the bolts clamping the parts together, said bolts having angular heads at their inner ends and said felly having angular recesses in 0 its inner face receiving the bolt heads and preventing turning movement of the bolts when the nuts are turned thereon. 

